SaluSafe is an encrypted email, chat, and file storage and sharing system. Your email and files are highly encrypted end-to-end, and cannot be intercepted by any third party. It was built from the ground up for security via strong cryptography, and is not just another security wrapper on top of an existing email solution.

The Taridium ipbx is a complete software-based VoIP PBX system that replaces a traditional proprietary hardware PBX. It runs on Linux without the need for extra software licenses, and is based on the SIP standard. It supports many phones and is available for free in a 5 user version.

BigBlueButton is a Web conferencing system that focuses on usability, modularity, and clean design, both for the user and developer. It implements real-time sharing of voice, Web cams, desktops, slides, and chat messages to provide remote students with a high-quality learning experience. Unlike other conferencing systems, the desktop sharing works on Mac OS X, Unix, and PC computers, and there is no hard-coded limit on the number of simultaneous Web cams.

Ardesia helps you make colored free-hand annotations on your computer screen, record them, and share them on the network. You can use the tool to make effective on-screen presentations, highlight things, or point out things of interest. It facilitates online presentations and demos, showing in real time your computer screen to anyone in the network. You can use this tool to enhance your lessons or courses. You can create nice tutorials and documentation, saving the desktop images with your free hand annotations. It works with any pointing device. You can draw lines with different strength, select color, erase things, and draw arrows. You can free-hand draw geometrical shapes using the shape recognizer, insert text with the keyboard, and highlight screen areas. You can draw upon the desktop or select an image as a background.

Prosody is a server for Jabber/XMPP written in
Lua. It aims to be easy to use and light on
resources. For developers, it aims to give a
flexible system on which to rapidly develop added
functionality or prototype new protocols.

Gemeinschaft is a PBX based on Asterisk, MySQL,
Apache, and PHP, and designed for high
availability and clustering. It provides automatic
provisioning for mass deployment, and can handle
over 10,000 users. Administration is done via
shell scripts or a Web GUI. Hot-desking and
mobility are supported. German voice prompts are
included. There is a standards-compliant Web GUI
with internationalization (and German and English
translations). Outbound and inbound routing with
full PCRE support is included.

WebcamStudio is an application for creating your
own TV studio on your computer for broadcasting
through a virtual webcam. It can mix multiple
video sources such as webcams, movies, images, and
your desktop. It can also login to your preferred
video streaming site like Stikam or BlogTV and
start your own show or video blog. It features
special effects, text overlay, video source
transition, animations, and faces.

Voisin is a social networking and group
collaboration platform. It's a complete Enterprise
2.0 solution that combines all of the technologies
you need to implement Enterprise 2.0 best
practices in order to help your work force realize
the full benefit of social collaboration and
knowledge sharing as they work to achieve group
goals. It is based on the OpenEdit Framework.